Electrical Studies of the Loma Prieta Fault Zone

洛马普列塔断裂带的电学研究

• 批准号: 9011919
• 负责人: Theodore Madden
• 金额: $ 7万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9011919&HistoricalAwards=false
• 关键词: Electrical; Studies; Loma; Prieta; Fault

This research will study the influence of lower crustal fluids in the Loma Prieta area using magnetotelluric and self-potential measurements. Three-dimensional interpretation of these magnetotelluric measurements will detail the variation ofj electrical conductivity around the fault zone. Self-potential measurements are related to fluid pressure variations. The combination of mapping the resistivity changes and fluid pressure variations in the lower crustal part of the fault zone should provide important information pertinent to furthering our understanding of earthquake cycles in the Loma Prieta area. This research is a component of the National Earthquake Hazard Reduction Program.

这项研究将利用大地电磁和自然电位测量来研究Loma Prieta地区下地壳流体的影响。这些大地电磁测量的三维解释将详细说明断裂带周围电导率的变化。自然电位测量与流体压力变化有关。结合断层带下地壳部分的电阻率变化和流体压力变化，应为我们进一步了解洛马普里塔地区的地震旋回提供重要信息。这项研究是国家减少地震灾害计划的一部分。